Web Application Development Services

Web application development covers the server-side infrastructure of a digital product — the APIs that mobile apps and websites call, the databases that store and retrieve data, the authentication systems that secure access, and the cloud infrastructure that hosts and scales everything. Without a well-built backend, even the most beautiful app will be slow, insecure or fragile under real traffic. Cloudemy builds backend systems that have been tested in production under real financial transactions, live auctions and e-commerce orders.

REST APIs use multiple fixed endpoints (GET /users, POST /orders) — simple, widely understood, best for straightforward CRUD operations and public APIs. GraphQL uses a single endpoint where the client specifies exactly what data it needs — best when the client needs fine-grained control over response shape, or when over-fetching (too much data) or under-fetching (not enough in one request) is a performance problem. We recommend REST for most projects and GraphQL when the data relationship complexity genuinely justifies it.

Use SQL (PostgreSQL, MySQL) when your data has clear relationships, you need ACID transactions (financial data, bookings, inventory), or your queries are complex. Use NoSQL (MongoDB, Firebase) when your data structure changes frequently, you need real-time synchronisation across clients, or you're storing document-like data without strong relational requirements. The wrong choice causes expensive migrations later. Cloudemy advises on database architecture before writing any code, based on your actual data model and query patterns.

Standard security built into every Cloudemy API: JWT or OAuth2 authentication, HTTPS-only endpoints, input validation and sanitisation at every boundary, parameterised queries to prevent SQL injection, rate limiting to prevent abuse and brute-force attacks, and secrets stored in environment variables (never in code). For financial or healthcare applications we add further hardening: IP allowlisting, audit logging of all data access, field-level encryption for sensitive data and enhanced session management.

Both. Cloudemy builds full-stack web and mobile applications — React or Next.js web frontend, Node.js or .NET backend, plus the database and cloud infrastructure. You can also engage us for the backend only if you have an existing frontend team or a separately contracted frontend developer. We're accustomed to building APIs that other developers consume, and we'll provide OpenAPI documentation and a staging environment for integration testing.